Home / 80,795.70-121,157.10-36,399.60

Finding the Fourth Proportional to 80,795.70, 121,157.10 and 36,399.60

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Solution

The fourth proportional to 80,795.70, 121,157.10 and 36,399.60 is: 54,582.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,795.70 : 121,157.10 = 36,399.60 : x
  2. Step 2: Convert to fraction form
    80,795.70/121,157.10 = 36,399.60/x
  3. Step 3: Cross multiply
    80,795.70x = 121,157.10 × 36,399.60
  4. Step 4: Simplify right side
    80,795.70x = 4,410,069,977.16
  5. Step 5: Solve for x
    x = 4,410,069,977.16/80,795.70
  6. Step 6: Final answer
    x = 54,582.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.